The effect of UV irradiation duty cycle on the 2nd harmonic coupling efficiency in optical fiber long period gratings
| Autor: | Ralph P. Tatam, Stephen W. James, James H. Barrington, Matthew Partridge |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Coupling
Optical fiber Fabrication Materials science Optical fiber sensor Long period grating business.industry Resonance Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention law Duty cycle Fiber optic sensor Harmonic Optoelectronics Optical fiber filter Irradiation Electrical and Electronic Engineering business |
| Zdroj: | Optics & Laser Technology. 109:227-232 |
| ISSN: | 0030-3992 |
| DOI: | 10.1016/j.optlastec.2018.07.029 |
| Popis: | Long period gratings (LPGs) as a sensing platform have the potential for multi-parameter measurement through the utilization of 2nd order coupling resonance bands. Although the current literature has produced LPGs with 2nd order resonance bands, the fabrication parameters required to generate these features have not been elucidated. Here, using UV irradiation via the point-by-point method, it is shown that by varying the duty cycle it is possible to fabricate LPGs that exhibit 2nd, 3rd, and 4th order coupling resonance bands. Fabrication of LPGs with a 25% or 75% duty cycle produces distinct 2nd order resonance bands, which are not observed when a 50% duty cycle is adopted. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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